Definition of guarana
: a dried paste that is made from the seeds of a South American climbing shrub (Paullinia cupana) of the soapberry family, that contains caffeine and tannin, and that is used as a stimulant
also
: this plant
Buying Guide
Our Reviews team has selected the best multivitamins.
Test Your Vocabulary
Eponyms: Words Named After People
-
- What is the best definition of boycott?

Test your knowledge - and maybe learn something along the way.
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Share guarana
Time Traveler for guarana
The first known use of guarana was in 1838
See more words from the same year